Samson TROVIS 3731-3, Монтаж и эксплуатация

Страница: 64 / 100

9 Maintenance
The positioner does not require any mainte-
nance.
There are filters with a 100
µ
m mesh size in
the pneumatic connections for supply and
output which can be removed and cleaned,
if required.
The maintenance instructions of any up-
stream supply air pressure reducing stations
must be observed.
10 Servicing explosion-
protected devices
If a part of the positioner on which the ex-
plosion protection is based needs to be ser-
viced, the positioner must not be put back
into operation until an expert has inspected
the device according to explosion protection
requirements, has issued a certificate stating
this or given the device a mark of confor-
mity.
Inspection by an expert is not required if the
manufacturer performs a routine test on the
device prior to putting it back into opera-
tion. The passing of the routine test must be
documented by attaching a mark of confor-
mity to the device.
64
EB 8387-3 EN
Maintenance